Table 3

Relationship between CC knowledge scores and the age and HbA1c levels of patients with T1DM by simple regression analysis

Independent variables	Unstandardised coefficients		Standard coefficient	t-value	P value	Collinearity Statistics		Model summary
Independent variables	B	SE	Beta	t-value	P value	Tolerance	VIF	R²	P value
Constant	27.485	1.804		15.239	<0.0001
Age	−0.159	0.062	−0.170	−2.573	0.011	1.00	1.00	0.029	0.011
Constant	35.967	2.885		12.465	<0.0001
HbA1c levels	−1.561	0.343	−0.292	−4.549	<0.0001	1.00	1.00	0.085	<0.0001

B, unstandardised beta (rate of change per unit time); CC, carbohydrate counting; HbA1c, glycated haemoglobin; R2, coefficient of variation value; T1DM, type 1 diabetes mellitus; VIF, variance inflation factor.